Subject
- Chemistry1
- Chemistry--Study and teaching1
- Commemorative postage stamps1
- Distillation1
- Distillation apparatus1
- Edelfelt, Albert, 1854-19051
- Faraday, Michael, 1791-18671
- First day covers (Philately)1
- Germany1
- Haber, Fritz, 1868-19341
- Hodgkin, Dorothy, 1910-19941
- Johns Hopkins University1
- Karl, Irene E. Dr., 1915-20061
- Nonnutritive sweeteners1
- Postmarks1
- Remsen, Ira, 1846-19271
- Saccharin1
- Scientific apparatus and instruments1
- Scientists1
- Whitbread and Company1